These historic brick walls were constructed by the Spanish in 1876
The Walled City, located on the Philippine island of Jolo, is considered the smallest walled city in the world. "The Spanish Brick Wall" served as a Spanish garrison and had 5 gates which were all used as watch towers. The Walled City, located on the Philippine island of Jolo, is considered the smallest walled city in the world. "The Spanish Brick Wall" served as a Spanish garrison and had 5 gates which were all used as watch towers.